title: International collaborative study of four candidate reference preparations for the antigenic and hemolytic measurement of human serum complement components.
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D000941:Antigens / Q000032:analysis*; D001769:Blood; D003165:Complement System Proteins / Q000276:immunology*; D005612:Freeze Drying; D006461:Hemolysis; D006801:Humans; D005779:Immunodiffusion; D008875:Middle Aged; D009391:Nephelometry and Turbidimetry; D012015:Reference Standards
chemical_list: D000941:Antigens; D003165:Complement System Proteins